﻿using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");

            Console.WriteLine("请输入成绩");
            int points = int.Parse(Console.ReadLine());
            switch (points /10)
            {
                case 10:
                    Console.WriteLine("优");
                    break;
                case 9:
                    Console.WriteLine("优");
                    break;
                case 8:
                    Console.WriteLine("良");
                    break;
                case 7:
                    Console.WriteLine("良");
                    break;
                case 6:
                    Console.WriteLine("合格");
                    break;
                default:
                    Console.WriteLine("不合格");
                    break;
            }

            int PI = 10;
            if (PI > 5)
            {
                Console.WriteLine("可以");
            }
            else
            {
                Console.WriteLine("不行");
            }


            int i = 100;
            if (i <= 30)
            {
                Console.WriteLine("新手");
            }
            else if (i <= 50)
            {
                Console.WriteLine("玩家");
            }
            else if(i <= 80)
            {
                Console.WriteLine("高玩");
            }
            else
            {
                Console.WriteLine("顶玩");
            }
        }
    }
}
